I've had this IRL discussion too many times, where the non-veg person says that a lack of meat affects their sleep, energy level, digestion, etc. I'm not a dickhead, and I don't argue with people's lived experience, even if it feels very sus.

I've done a good faith search for evidence of how certain people might have negative health effects from not eating meat, and nothing turns up. (Short of just having a bad veg diet) Maybe I'm missing something. It's just frustrating how often people use this as an excuse, and they're often anti-vegan in their wider ideology.